Filter users will experience significant improvements in v2.0.0 released today.
Our core code has been refactored to use the Gravity Forms Query API to improve performance. Shortcode filtering has been improved with new functions greaterthan and lessthan. Date and time filtering is now based on the local install time zone rather than UTC previously.
Full details are available here.
Customers with a valid license active on their site may update via the standard WordPress 1-click update.